Hi,Are you using a shared hosting with a shared IP address? If that is the case Google can block your IP because of other sites on the same server with the same IP address. It may pass some time before Google will unblock your IP address, but it is not predictable when it will happen.

We can also offer you to upgrade your Pro license to Enterprise and avoid such possible issues, since Enterprise version will be hosted on our cloud network and will not have such problems.